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    The Exploratorium
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    In this activity, learners investigate the relative growth of lengths, areas, and volumes as cylinders are scaled up. Learners connect their experience with cylinders to the world outside the...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    NCTM Illuminations
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    In this math lesson, learners create parallelograms from square sheets of paper and connect them to form octagons. During the construction, learners consider angle measures, segment lengths, and...

    1 cent - $1 per student Ages 11 - 18 1 to 2 hours
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    NASA
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    In this activity (page 10 of PDF), learners approximate the area of the uppermost cross section of an impact crater using a variety of square grids. They conclude which angle of impact results in...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    Children's Museum Of Houston
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    In this activity, learners combine counting, area and perimeter concepts as they prepare the seating arrangement for a family reunion dinner.

    1 cent - $1 per group Ages 6 - 8 10 to 30 minutes
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    Twin Cities Public Television
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    This is an activity (on page 2 of the PDF) about surface area to volume ratio. Learners will bake sugar cookies, testing how much colored sugar is rolled up by 1 large ball of dough vs. an equal...

    $10 - $20 per group Ages 8 - 14 30 to 45 minutes
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    PBS
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    In this math lesson, learners practice measurement skills as they examine a soap bubble print. Learners follow a recipe to make a soap bubble solution. They use the soapy solution to blow large...

    $1 - $5 per group Ages 8 - 11 45 to 60 minutes
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    NOAA
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    In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007. Then, learners use...

    free Ages 11 - 18 45 to 60 minutes
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    PBS
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    In this math lesson, learners use a variety of manipulatives to explore spatial relationships of squares and their transformations. Learners create a square with 36 square tiles and determine that...

    $5 - $10 per group Ages 8 - 11 1 to 2 hours
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    Lawrence Hall of Science
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    Using a real-size sketch of a baby elephant's footprint, learners estimate, measure and record the width (diameter) and outside edge length (perimeter or circumference) of the footprint. Then...

    1 cent - $1 per group Ages 4 - 11 30 to 45 minutes
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    Children's Museum of Indianapolis
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    In this three/four-day lesson, learners calculate perimeters and areas and draw the castle plan to scale. They develop a timeline outlining the construction of a castle and build catapults, a...

    $5 - $10 per group Ages 8 - 14 1 to 7 days

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